So far, we have run the Elasticsearch server and performed some simple tests. We also familiarized ourselves with some basic concepts from an architectural point of view to reduce the trauma of our learning curve. We have listed and briefly discussed the new features and major changes in the new release. We also covered the best way to handle the migration between major versions.
In the next chapter, we'll delve into index APIs. An index is a logical namespace for organizing data in Elasticsearch. Becoming familiar with the index infrastructure is the first step in solving Elasticsearch performance issues. We'll first understand the APIs for index management, index settings, and index templates. After we practice some advanced examples of index status management operations, we will also discuss monitoring indices statistics.